Pneumatic conveyer



L A. GASTEIGER. PNEUMATIC CONVEYER. APPLICATION FILED JAN- 7. 1920-.

L41 7 0mm Patented May 23, 1922 Phllflil'l tthfllll fi CONVIEYER.

Specification of Letters Patent.

Patented May 23, MTEZQ Application filed'January 7, 1920. Serial No.349,942.

To all Li')/l0l7b it may concern:

l e it known that T, JUsrUs l'arnstrnlenn, a citizen of the Unitedifitates, and resident of Der-moot, in the county of Allegheny andtitate of Tennsylvania have invented a new and useful Tll'lPTOVGIIlGHtin Pneumatic tlonveycrs; and i do hereby declare the fol-- lowin to be afulh clear, and exact description thereof.

My invention relates to a pneumatic con-- veyer.

The object of my invention is to provide a pneumatic conveyor for theconveying of grain, earth sand, lime, loose cement or other materials inwhich the material itself is employed as a seal to maintain the vacuumin the receiving chamber, the discharge from the receiving chamber beingso controlled as to maintain this seal continuously during; theoperation of the conveyor.

To these ends my invention comprises the novel features hereinafter setforth and cl aimed.

in the accompanying drawing, Fig. l is a vertical sectional. elevation;Fig. 2 is a plan view of my improved pneumatic con veyer; and Fig. 3 isa cross section on the line 3 3, Fig. 1.

ll hile have illustrated my invention in connection with a portablepneumatic conveycr it will be understood that i do not limit myself inany sense to this particular ha i The numeral 2 designates a suitablercceptacle which is supported by the legs 3 which may be formed ofangle-bars secured to the sides of said receptacle. The receptacle 2 hasthe inlet 41 to which the suction pipe 5 is connecterh said pipe having'at its lower end a suitable nozzle 6 The shape and size of this nozzle 6may vary according to the material to be conveyed.

The receptacle 2 is preferably made in the form of a hopper with theinclined bottom sheets 7, with the opening 8 communizating with thesealing chamber which is riveted or otherwise secured to the inclinedwall 7 of the receptacle 2.

The sealing chai'uber 9 is normall closed by the valve or gate 10 whichis adapted to swing on the hinge rod 11 and engaging; the lugs 12 on thesealing chamber 9. A spring 13 surrounds the hinge rod 11 and engagesthe gate 10 to hold the same normally closed.

A shaft 14: is journaled in suitable bearings 1.5 on the top 16 of thereceptacle 2, said shaft carrying at its lower end the spiral conveyorllwhich is adapted to enter and lit within the sealing; chamber 9.

The upper end of the shaft 14: carries the worm. wheel 18 which isdriven by the worm 1.8 on the sh aft 19. The worm shaft has the pulleywheel 20 which is connected up by the belt 21 with the pulley wheel 22on the motor shaft 23 of the motor 24. The fan is driven by the motorshaft 23, said fan beinp; of any si'litable construction and a pipe 26is connected up to said fan and to the receptacle 2 whereby a vacuum orpartial vacuum may be maintained in said receptacle.

Baffle plates 27 are arranged within the receptacle 2 to baffle thematerial which enters said receptacle by the pipe 5 and prevent itsescape to the pipe 26, said baffles acting to direct the material downtoward the outlet 8 of said receptacle.

For the purpose of suspending the apparatus from agrain or otherhandling device the chains 28 may be employed con nected up to a ring29;

When my pneumatic conveyer is in operation, the motor is started and bymeans of the fan 25 a partial vacuum is created in the receptacle 2which, through the suction pipe 5 acts to draw the material to be conveyed into the nozzle 6 to be delivered by the pipe 5 into thereceptacle 2. ll/laterial on enterin said receptacle is directeddownwardly by the baffles 27 and accumulates in the sealing chamber 9 aswell as in the receptacle 2. The spiral conveyor 17 acts to force ordrive the material. down through the sealing; chamber 9 and the forceimparted to the material by said spiral conveyor over comes the actionof the spring 13 and the gate or valve 10 is opened whereby the materialis delivered from the sealing chamher 9. The resistance offered by thespring 13 acts to prevent the discharge of the material in such quantityas to destroy the seal created by the material which fills the sealingchamber 9 at all times and prevents the destruction of the vacuum in thereceptacle 2, so that the suction of the material by the pipe 5continues without interruption and the apparatus works in a continuousmanner, always discharging a uniform amount from the receptacle 2.

The full effect of the fan is obtained at 10 ceptacle forming adischarge outlet for same,

a vertically arranged spiral conveyer in said sealing chamber andforming a close ht therewith, means for driving said splrzl conveyer,and a spring-actuated valve controlling the discharge outlet of saidsealing 1 chamber.

In testimony whereof, I, the said Jus'r'os A, GASTEIGER, have hereuntoset my hand. JUSTUS A. \EA'KSTEIGER. Witnesses A. E. GLANEY, Boer. D.Terran.

